Improved bag-filter for sirups



G. A. JASPER. BAG FILTER POR SYRUPS, ne.

No. 42,291. Patented Apr. 12, 1864.

ANITE STATES TAT-ENT Erice.

eUs'TAv'U's A; JASPER., or cHARLES'rowN, MASSACHUSETTS.

IMPROVED BAG-FILTER FOR SIPtUPS, &c

Specification forming part ofsLetters Iatent lilo. l, dated Aprilil, 1864.

'be fully described in the following specification, and represented inthe accompanying drawings, of which- 'Figure l is a top view, Fig. 2 a side elevation, and Fig. 3 a vertical section, of it.

In what are called bag-filters, as em-v ployed in sugar-refineries and for filtering sirup, the'liquor to be filtered has generally' 4as auxiliary to my main invention or improvebeen snti'ered to -iiow directly into the bag or bags of such filters and thence ina direction from the inside to the outside of each bag. In consequence thereof the scum and impurities 4will remain outside of the bag, the liquor-flow ing into the bag laterallyand thence down through it and into Va receiving-chamber-communicating 'with the,v interior of each' bag. The several bags are arranged within acistern Ior reservoir, into which the'liqnor or sirup to be filtered is placed or sufferedto ow. To cleanse the bags, steam is to be caused to rush into the receiving chamber underneath the bags, and fromv thence into each of the bags, and through its sides and into and through the cistern or reservoir. In carrying out my invention'I make use of, Ias an important auxiliary thereto, a foraininons pipe or hollow post to each filtering-bag, suchpipe or post being made to open at its lower end into 'the receivingchamber. It is also provided not only with an annular groove or neck, in which the bag at its neck is to be tied, but is to have at' its lower end a'screw, by which it may be screwed and fixed to the bottom of the cistern. u

In the drawings, A denotes the receiving cstern or reservoir as having underneath its bottom a a close chamber, B, provided with an induction-pipe, b, and an eductioncoclf, c. There is also an eduction-coek, d, at the bottom ofthe cistern A.

The series of ltering-bags (made of cloth', leather, or other suitable fabric), are exhibited at C C C, Src., as arranged vertically within the cistern A, each of the said bags being supported by a hollow foraminous upright or pipe, D, which at its lower end screws into the bottom a and opens into the chamber B. ,Each

of vthe saidpipes or standards has numerous perforations or tine holes through its sides, and, furthermore, it has just above its screw d a grooved neck, e, which is circnmscribed by the bag, which is fastened to the neck by a string Wound about' them and suitably tied.

I consider the foraminous tubes or standards ment, and as a very usefulmeans of supporting the bags in their positions, as well as of; enabling them to be lremoved from the cisternf as circumstances 'may require. When the -tubes are not used,each bag maybe properly supported at its upperend, its lower end being affixed to a tube or nozzle projecting upward from the bottom of the cistern. One or more air-discharging pipes, g, may lead out of the chamberB and upward to or above the top of' th'e cistern A.

In'using the apparatus, a sirujp tobe ltered isto be p oured into the cistern A, from whence it will ilow through the sides of the bag and from thence pass into and down their supporting-tubes and from thence pass into .the receiving-chamber, out o f which it may be drawn by means ot' the cockc.

When the Youtside surfaces of the bag may lhave become charged with dirt to suchextent as to require the bags to be cleansed, steam 'under pressureV may be caused to' enter the chamber B, and from thence to flow up into and through the several bags and into the cisvtern or reservoir containingthem. This will generally save thenecessityof removing the bags from the cistern inV order tocleanse them, as the steam by penetrating the meshes ofthe bags will clear them and prepare them for a renewal of the filtering process,

I do not claim a bag'iil'ter having its bags opening at their upper ends out ot'ta 'receivingcistern and bein g suspended within a receivin'gchamber, and so that the Sirup to be filtered shall be caused first to flow into the upper end of 'ea-ch bag and from the interior to the exterior of each bag, as is thecase Yin the well-- known Taylor-s bag-lter.

Wmt I do claim as my invention is- 1. improved arrangement and applica; tion -of the bags, thelcistern for containing the Sirup, and lthefchamber for receiving it after .it may lieve f been passed'through the bags,

the same being such as to cause -the sirup to rst owfngainst the outside surface of each p ,bag,thence'th'rough the sides or 'meshes of the bagend into the interior of the'bag, and from thence out of the same or into the receiving-chamber, as described.

2. The combination and arrangement of onev or more hollow foraiminous standards or tubes, D, with one or more filter-begs and a receivingeistern, A, arranged together in lthe improved manner, substantially as hereinbefore described,

3. The combination and arrangement of asteam chest or receiving-chamber, B, with the chamber A, and one or more filter-bags ai, ranged therein in manner and so as to operate sub; tantially as described.

4. The tubular bag-supporter or post, as made with the bag-securing neck and with e. screw arra-n ged atits lower part, substantially in manner and for the purpose set forth.

. GUSTAVUS A. JASPER. Witnesses:

R. H. EDDY, F. P. HALE, Jr. 

